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From page 1... ... 1 chapter one MINERAL BYPRODUCTS Mineral processing includes waste rock, mill tailings, coal refuse, wash slimes, and spent oil shale (RMRC 2008; TFHRC 2009) Read the entire page →
From page 2... ... 2 Group Description Example Potential End Uses Type 1 Unprocessed waste -- large-volume, low-value industrial minerals; commonly used in construction applications; m arket would be located in close proxim ity to use Quarry scalpings; quarry blocks; colliery spoi l Fill, low-grade road stone, arm our stone, brick clay Type 2 Processed waste -- reclaimed minerals: only a sm all am ount of processing is required; m arket largely local; a small amount of secondary waste will be produced Silica sand waste; limestone waste; building stone waste Silica sand, kaolin, brick clay, m ineral filler, aglime, aggregate Type 3 Processed waste -- added-value products: contain sm all am ounts of valuable m inerals; potentially complex processing is required; major capital investm ent; international market; large volumes of secondary waste Lead/zinc waste; pegm atite waste; silica sand waste Fluorite, barite, feldspar, rare earths, m ica, heavy m inerals Type 4 Beneficiated wastes -- contain small quantities of highly valuable minerals; com plex processi ng requirements; large volumes of secondary waste; international market Specific m ine wastes Gem stones, other high-value metals After Petavratzi and Wilson (2009) Read the entire page →
From page 3... ... 3 Property Value Copper Tailings Mill Tailings C oal Refuse Minus 0.075 mm, % 31.7 -- -- Plasticity Index Non-plastic -- -- AASHTO Soil Classification A-2-4 -- -- Specific Gravity 2.71 -- -- Internal Friction Angle, o -- 2 8–45 25–42 Maximum Dry Density, lb/ft 3 -- 1 00–140 80–120 Optim um Moisture Content, % -- 10–18 6–15 Permeability, cm/sec -- 10 -2 to 10 -4 10 -4 to 10 -7 Rainfall Erosion, % 2.3 -- -- Color Grey -- -- After RMRC (2008) Read the entire page →

From page 1...

... 1 chapter one MINERAL BYPRODUCTS Mineral processing includes waste rock, mill tailings, coal refuse, wash slimes, and spent oil shale (RMRC 2008; TFHRC 2009)

Read the entire page →

From page 2...

... 2 Group Description Example Potential End Uses Type 1 Unprocessed waste -- large-volume, low-value industrial minerals; commonly used in construction applications; m arket would be located in close proxim ity to use Quarry scalpings; quarry blocks; colliery spoi l Fill, low-grade road stone, arm our stone, brick clay Type 2 Processed waste -- reclaimed minerals: only a sm all am ount of processing is required; m arket largely local; a small amount of secondary waste will be produced Silica sand waste; limestone waste; building stone waste Silica sand, kaolin, brick clay, m ineral filler, aglime, aggregate Type 3 Processed waste -- added-value products: contain sm all am ounts of valuable m inerals; potentially complex processing is required; major capital investm ent; international market; large volumes of secondary waste Lead/zinc waste; pegm atite waste; silica sand waste Fluorite, barite, feldspar, rare earths, m ica, heavy m inerals Type 4 Beneficiated wastes -- contain small quantities of highly valuable minerals; com plex processi ng requirements; large volumes of secondary waste; international market Specific m ine wastes Gem stones, other high-value metals After Petavratzi and Wilson (2009)

Read the entire page →

From page 3...

... 3 Property Value Copper Tailings Mill Tailings C oal Refuse Minus 0.075 mm, % 31.7 -- -- Plasticity Index Non-plastic -- -- AASHTO Soil Classification A-2-4 -- -- Specific Gravity 2.71 -- -- Internal Friction Angle, o -- 2 8–45 25–42 Maximum Dry Density, lb/ft 3 -- 1 00–140 80–120 Optim um Moisture Content, % -- 10–18 6–15 Permeability, cm/sec -- 10 -2 to 10 -4 10 -4 to 10 -7 Rainfall Erosion, % 2.3 -- -- Color Grey -- -- After RMRC (2008)

Read the entire page →

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